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Circuit and method for controlling phase of motor

A control circuit and motor controller technology, applied in the direction of DC motor speed/torque control, control system, electrical components, etc., can solve the problem of low operating efficiency of brushless DC motors, and the inability to adjust the phase of the controller of brushless DC motors, etc. question

Active Publication Date: 2016-03-02
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a motor phase control circuit and method to at least solve the technical problem of relatively low operating efficiency of the brushless DC motor caused by the inability to adjust the phase of the controller of the brushless DC motor

Method used

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  • Circuit and method for controlling phase of motor
  • Circuit and method for controlling phase of motor

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Embodiment Construction

[0018] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0019] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a circuit and a method for controlling a phase of a motor. A motor controller is connected with the motor and comprises a three-phase inverter and a master chip; the three-phase inverter is connected with the motor; the master chip is connected with the three-phase inverter; the circuit for controlling the phase of the motor also comprises a sampling resistor and a filter circuit; one end of the sampling resistor is connected with the three-phase inverter; the other end of the sampling resistor is grounded; and the filter circuit is connected between the sampling resistor and the master chip, and is used for filtering out a voltage disturbance signal of the sampling resistor to obtain a voltage signal, and transmitting the voltage signal to the master chip, so that the master chip adjusts the phase of the motor according to the voltage signal. According to the circuit and the method, the technical problem of relatively low operating efficiency of a brushless direct current motor due to the fact that the phase of the controller of the brushless direct current motor cannot be adjusted is solved.

Description

technical field [0001] The invention relates to the field of motors, in particular to a motor phase control circuit and method. Background technique [0002] With the development of permanent magnet materials, power electronics technology, and advanced control technology, brushless DC motors are widely used in national defense, industrial and agricultural production, and daily life due to their advantages such as simple structure, light weight, small size, low loss, and high efficiency. . Due to the excellent characteristics of brushless DC motors, various household appliances such as refrigerators, air conditioner compressors, and fans have replaced the previous motors with brushless DC motors. The efficiency of the brushless DC motor is related to its phase, and the phase of the existing brushless DC motor is mainly related to its Hall position. Since the Hall position of the brushless DC motor must be fixed, its phase cannot be adjusted, so the brushless DC motor can on...

Claims

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Application Information

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IPC IPC(8): H02P7/298
Inventor 光宣亮郭伟林胡安永吴文贤张敏
Owner GREE ELECTRIC APPLIANCES INC
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